Process to increase the sensibility of relays for alternating currents.



E. REISZ. PROCESS TO INCREASE THE SE'NSIBILITY 0F RELAYS FORALTERNATING CURRENTS. APPLICATION FILED APR. 9. I9l3- Patented July 24, 1917.

TINTTE @TAE ATENT @FFTTFE EUG-EN REISZ, OF BEBLIN-TREPTOW, GERMANY.

TROCESS TO INCREASE THE SENSIBILITY 0F RELAYS FOR ALTERNATING CURBENTS.

meanest).

Specification of Letters latent.

Patented July 24, 191%.,

Application filed April 9, 1913. I Serial No. 760,064.

To aZZ whom it may concern:

Be it known that I, EUGEN Rnrsz, a subject of the Emperor of Austria, residing at Berlin-Treptow, Germany, have invented certain new and useful Improvements in Processes to Increase the Sensibility of'Relays for Alternating Currents, of which the following is a specification.

This invention relates to a method of increasing the sensibility of relays for alternating currents of a determined number of periods so that the currents reinforced react directly or inductively upon the relays. In this connection, it is presumed that alternating currents with simple curve form, for instance, sine currents, are to be reinforced. The method can only be employed when the relay has no mechanicz'il inertia at all, as is the case, for instance, in gas discharging relays, as otherwisethe self-oscillation of the apparatus would frustrate the effect just eX- plained. In the drawing an apparatus is shown wherein the method may be effec tively carried out, and therein an embodiment of the invention is represented in diagrammatic form.

Referring to the drawing, R is the relay consisting of a discharge tube D having a heated cathode K and an anode A between which an auxiliary electrode H of sieve or net form is arranged. A battery B provides the heating current for the cathode and a second battery B the current for the tube. The auxiliary electrode is connected to the battery B by the adjustable resistance ll. Two transformers T and T inductively connect the line N or other source of cur-- rents to be reinforced with the relay circuit and the latter circuit with the receiving instrument J respectively. The transformer T consists of three windings 79 s and t the winding 32 is the primary of the transformer and is connected with the source N of the currents to be reinforced, for instance with the antenna; 3 is the secondary winding cut into the circuit of the auxiliary electrode. The third winding 6 of the transformer T is arranged in the circuit which contains the anode A and the primary winding p of the second transformer T An adjustable resistance W is furthermore arranged in this circuit and prevents the generation of a continuous alternating current in said circuit and at the same time regulates the current flowing through the dis charge tube. The terminals of the secondary winding 5 of the transformer T and the receiving instrument J, for instance a telephone, are connected. The source of the alternating current to be reinforced acts inductively through the auxiliary winding 8 as above noted. upon the auxiliary electrode. The anode currents reinforcibly re leased in this manner flow through the winding Wand induce currents in the telephone and through the winding 6 again in liuence the auxiliary electrode whereby a further increaseof the anode current results. When the electric constants of coils T and T are selected in such manner that the currents reacting uponthe relay coincide in their direction with the primary current, that is, when there is no shifting of phases present between the primary and secondary currents, then the amplitudes of the currents reinforced by the relay always become greater. The strength of these currents can be adjusted through the non-inductive resistance W cut into the anode circuit to the desired value. The resistance /V also prevents the appearance of a continuous alternating current through the mutual induction of the windings s and t The current 2' coming from the line or other source of alternate current flows through the winding p of the transformer T and induces similar currents in the windings t and 8 The impulses in the circuit through 6 are so timed that the current in s is continually augmented, or the current in duced in s is in phase with the current induced in s from 79 The two circuits through the tube R are in resonance with each other and the capacity of the coils is relied upon to effect this tuning of the circuits.

What is claimed is:

1. In a relay system comprising a relay without inertia, a line circuit, an actuating circuit for said relay containing the currents to be reinforced and a local relay circuit containing the reinforced currents, the two last-named circuits being adjusted to resonance, each of the circuits being provided with a winding and all the windings acting inductively on the other windings.

2. In a relay system comprising a relay without inertia, a line circuit, an actuating circuit for said relay containing the currents to be reinforced and a relay circuit containing the reinforced currents, means to establish resonance between the two last circuit for said named circuits, a transformer comprising a winding embodied in the relay circuit, a see ond winding instrument.

3. In a relay system comprising a relay without inertia, a line circuit, an actuating relay containing the currents to be reinforced and a relay circuit containing the reinforced currents, means to establish resonance between the two last named circuits, a transformer comprising a winding embodied in the actuating circuit of the relay and a second winding embodied in the relay circuit, both windings being capable of acting inductively on each other, the self-induction of both being so established that the currents induced in the first named winding by the other winding have a phase displacement of 90 relatively to the inducing currents.

4:. In a relay system comprising a gas discharge relay having a cathode, an anode and an auxiliary electrode, a line circuit carond and third rying alternating currents of simple curve form, an actuating circuit for the 'relay connected with the auxiliary electrode of the same, anode and cathode of the relay, means to establish resonance between the two last named circuits, a transformer comprising a winding embodied in the line circuit, a second winding embodied in the circuit of the auxiliary electrode, and a third winding embodied in the circuit of the anode, all the windings being arranged to act inductively on each other, the self-induction of the secof these windings being so established that the currents induced in the second winding by the current in the third winding have a phase displacement of 90 relatively to the inducing currents and a second transformer comprising a winding embodied in the anode circuit and a winding connected with a receiving instrument.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

, EUGEN REISZ.

Witnesses SIEGMUND Srmnssr, Lonwre ZWEIN.

and a relay circuit connected with the 

